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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Status report on modifications and drawings for the Spectre 12-cylinder engine and other car components.

Identifier  ExFiles\Box 30\4\  Scan132
Date  23th March 1934
  
- 14 -
SPECTRECodename for Phantom III 12-CYL. ENGINE.

LeC. 3809 Modfn. to Contact Breaker .............. Recd. 13.2.34.
Detail drawings completed and issued ...... 13.3.34.

LeC. 3810 Doweling of Oil Sump to Crankcase ...... Recd. 13.2.34.
This has been incorporated on Crankcase B.H.

LeC. 3811 Contact Breaker Cam ................... Recd. 15.2.34.
Detail drawing completed and issued ...... 13.3.34.

LeC. 3812 Oil Filler ............................ Recd. 15.2.34.
Detail drawing completed and issued ...... 15.3.34.

LeC. 3813 Modn. to Oil Temp. Regulator .......... Recd. 14.2.34.
Incorporated on crankcase T.H.

LeC. 3816 Ignition Wiring and Fixing of Coils ..... Recd. 27.2.34.
Detail drawings are in hand.

LeC. 3822 Ignition Tubes ......................... Recd. 27.2.34.
Detail drawings will be put in hand as soon as possible.

LeC. 3823 Water Temperature Regulator ............ Recd. 14.3.34.
Detail drawings will be put in hand as soon as possible.

LeC. 3828 Inner Ignition Tubes and Rocker Oil Feed Pipes ................................. Recd. 14.3.34.
Detail drawings will be put in hand as soon as possible.

ALL CARS.
=========
RR. Sch. 455 Ignition Coil - D.{John DeLooze - Company Secretary} Sch. 580 with revised terminals.
Scheme not yet approved.

RR. Sch. 621 5.500 o/Dia. Dynamo.
Detail drawings are in hand.

N. Sch. 3971 Torsional Connection of Servo Driven Plates by spring rings ................................ Recd. 13.2.34.
Detail drawings completed and issued ...... 26.2.34.

RR. Sch. 626 Mod. Switchbox for Dual Ignition.
Detail drawings completed and issued ...... 16.3.34.

RR. Sch. 634 Vent for Petrol Tank.
Detail drawings completed and issued ...... 15.3.34.
  
  


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